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Levitated liquid dynamics in reduced gravity and gravity-compensating magnetic fields

Levitated liquid dynamics in reduced gravity and gravity-compensating magnetic fields

Bojarevics, Valdis and Hyers, Robert W. (2012) Levitated liquid dynamics in reduced gravity and gravity-compensating magnetic fields. JOM (The Member Journal of The Minerals, Metals & Materials Society), 64 (9). pp. 1089-1096. ISSN 1047-4838 (Print), 1543-1851 (Online) (doi:10.1007/s11837-012-0417-y)

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Abstract

Dynamic models are used to investigate the behavior of liquid droplets suspended in alternating current and direct current magnetic fields in microgravity and in various configurations providing conditions similar to microgravity. The realistic magnetic fields of solenoidal coils are used for the modeling experiments with electrically conducting (liquid silicon or metal) droplets. At high values of magnetic field, some oscillation modes are damped quickly, while others are modified with a considerable shift of the oscillating droplet frequencies and the damping constants from the nonmagnetic case. On a larger scale, the models are used to investigate the melting and heating process of reactive materials. It is demonstrated how 1 kg of liquid titanium in a traditional ‘‘cold’’ crucible-type furnace can be fully levitated without contact to wall to achieve high superheat of the melt.

Item Type: Article
Additional Information: [1] First published online: 23 August 2012. [2] Published in print: 1 September 2012. [3] Published as: JOM, (2012), Vol. 64, (9), pp. 1089-1096.
Uncontrolled Keywords: magnetohydrodynamics, free surface, magnetic levitation, material properties
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
Pre-2014 Departments: School of Computing & Mathematical Sciences
School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis
Related URLs:
Last Modified: 14 Oct 2016 09:22
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/8963

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